My main shooting bag is a Thinktank Retrospective 30 and I love it. They claim it can hold "two pro-sized bodies plus 3-6 lenses" but I don't think it's the best to hold camera bodies, especially if they have grips. My bag usually holds 5 or 6 lenses, flash, batteries, and a small "hero kit" for the occasional fix (tissues, Tide pen, safety pins, etc.).

canon rumors FORUM

look at a Domke f2 - it will hold your stuff, is within your budget, and will last even with rough wear.The shoulder strap is comfortable, the included lens padding protects your stuff really well without a lot of extra weight.

One thing I'd note is that with a pack that big, same as my older one (apologies for the minor derailing of your thread BTW), it tended to put me off wanting to use it, which is why mine is in like new shape.

If it were me, i'd be looking at something as minimal as possible. Paul's suggestion looks like a good candidate.

I have ThinkTank Retrospective 30 and it easily holds gripped 7D, speedlite 580 EXII, 70-200 2.8L II, Tamron 24-70 2.8, canon 50 1.4. When you have quite expensive gear (at least for me it is expensive) you need to have well built bag, which you can trust. For me it is important that gear is safe, easily accessible from bag, bag has good and well built straps and you need to change bag every 2-3 years.

Of course, Think Tank Retrospective 30 is expensive, but in my opinion it is really worth that money.